eject vs exhaust

eject is not a noun while exhaust is a noun.

Word	Noun	Adjective	Verb	Adverb
eject	No	No	Yes	No
exhaust	Yes	No	Yes	No

As verbs, eject and exhaust are synonyms defined as:

Other synonyms of eject include discharge, expel, release.

eject (noun)	exhaust (noun)
	system consisting of the parts of an engine through which burned gases or steam are discharged
	gases ejected from an engine as waste products

eject (verb)	exhaust (verb)
eliminate (a substance)	wear out completely
cause to come out in a squirt	eliminate (a substance)
put out or expel from a place	use up the whole supply of
leave an aircraft rapidly, using an ejection seat or capsule	use up (resources or materials)
	deplete